Blasting tube and blasting-tube package



Deco I G. S. CLARK BLASTING TUBE AND BLASTING TUBE PACKAGE Filed Feb. 10, 1922 Patented Dec. 29, 1925.

UNETED STATES mea er earner @PFECE.

GEORGE SHERMAN CLARK, OF HUNTINGTON, WEST VIRGINIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO CLARK PATENT TUBING (30., OF WHEELING, WEST VIRGINIA, A

CORPORATION OF WEST VIRGINIA.

BLASTING TUBE AN D BLASTING-TUEE PACKAGE.

. 1 Application filed February 10, 1922. Serial No. 535,643.

To all whom it may-concern:

Be it known that I, GEORGE S. CLARK, a

' citizen of the United States, residing at Huntington, in the county of Cabell and State ofWest Virginia, have invented certainnew and useful Improvements-in Blasting Tubes and Blasting-Tube Packages; and

I do here-by declare the following to be a full, clear, and exact description of themvention, such as will enable others skilled in the art to which it appertains to make and use the same. I

In the mining industry the cartridges are formed in the mine when required for use, the miner utilizing a strip of paper which is Wrapped about a mandrel into tubular form from which he makesthe shell for receiving the blasting charge.

This practice has not been wholly satisfactory in results and is yieldlng to a method in which the miner is supplied with a tubestrip from which a portion is severed to form a cartridge shell of required length.

The present invention relates to the method of forming the tube strip into a package of convenient shape and size for handling, to the tube package and to the tube which embodies a combined sealing and gage strip whereby the required length of tube may be easily determined and whereby the tube is rendered tight and the package close.

In constructing the tube a strip of paper or other suitable material has its (apposite edge portions folded inwardly an overla ped on a central line whereby to form a tu e of flattened form. A seahng strip is applied and secures the overla ped edge portions of the tube stri The. ad esive applied to the sealing strip ampens and causes the e. Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the'same to meet different in the form, proportion and minor details of construction may be resorted to without departing from the nature of,the invention.

Referr ng to the accompanying drawings forming a part of the application, Figure 1 is an elevation of a miners iblasting tube package embodying the inven- Figure 2 is a top plan view thereof, glgure 3 is an end View of the package, an

Figure 4 is a perspective view of the pack ageewith an end portion of the tube strip extended.

Corresponding and like parts are referred 'to in the following description and designated in the several viewsof the drawings by like reference characters,

The numeral 1 desi ates a flat tube strip constructed in accor ance with the invention and formed into an oblong package, as

indicated most clearly in Figures 1 and 4,

the outer end of the tube being made secure by a fastening strip 2 secured thereto by a suitable adhesive. The flat tube 1 is formed of a strip of paper or other suitable material having its longitudinal edge portions folded with the marginal edge portions expansion of the strip which is applied to the tube while still damp and expanded. The tube is formed in a continuous length and simultaneously with the formation of the tube,

the latter is rolled .or wrapped upon itself so as to form an oblong package, as indicated most clearly in Figures 1 and 4. The tube is so rolled or wrapped that the side having the sealing strip 3 applied thereto is disposed outwardly, whereby to occupy the outside of the respective windings or the process of forming the.

folds. After a package of predetermined size has been formed, the tube strip is severed and the end of the tube is made secure by means of the fastening strip 2. During the drying of the sealing strip 3, the

latter. contracts thereby insuring a tight joint and at the same time the'formation of a close package, since the several winds or folds contract and are brought into closer relation thereby forming a compact and tight package.

The sealing strip 3 is provided in its length with graduations whereby to facilitate determining the length of the portion of the tube to be severed in order to form a shell to receive the blasting charge when preparing a cartridge of reqllgired length.

The oblong. form of the pac age adds tothe convenience and ease of handling the same in the mine and doesnot materially incommode the miner in carrying the-same about the person: I

It will be understood that the invention is not .limited to the illustrated embodiment but is sub'ect to Various modifications. For examp e, two strips of paper and two sealing strips may be used in the case of large tubes.

What is claimed is:

1. The method of forming a blasting tube package, which includes forming a fiat tube by folding the edges of a fiat strip towards ope another, applying a damp sealing strip to the tube to secure the edge portions thereof and Wrapping the flat tube upon itself to form a package with the sealing strip outside, whereby the subseq'uent drying and contracting of the strip insures the formation of atight package.

ing and contracting of the strip insures the formation of a tight package.

3. A blasting tube package formed from a fiat tube having a sealing strip applied to the tube and lying on the outside of the wrappings, the strip being applied to the tube while still damp and the package thereupon wrapped to form a tight package, the tube being adapted to be drawn laterally from the center when required for use without releasing. the outer end of the tube.

4. A blasting tube package formed from a fiat tube having a sealing strip applied to the tube and lying on the outside of the Wrappings, the strip being applied to the tube while still damp and the package thereupon Wrapped to form a tight package, the tube being adapted to be drawn laterally from the center when required for use without releasing the outer end of the tube, and

linear graduations on the tube for indicat-' ing the length withdrawn from the package.

In testimony whereof I afiix my signature,

GEORGE SHERMAN CLARK. 

